Help! My cat is sick. Symptoms: lethargy, bloody stool, vomiting, appetite loss, meowing.?

I can't tell you what to do with regard of treating him at home but are there no charities that run vet clinics near you? I'm from UK and the RSPCA, Blue Cross etc all run programs for people such as yourselves who can't afford vet treatment. If not then I would advise you end his suffering because by the sound of it he is suffering. I'm sorry I caouldn't help any more. and I do hope there is someone is near you who can help.